When comparing PocketBell vs Talalarmo, the Slant community recommends Talalarmo for most people. In the question“What are the best alarm clock apps for Android?” Talalarmo is ranked 15th while PocketBell is ranked 18th.
Ranked in these QuestionsQuestion Ranking
Pros

Pro Online radio and MP3 alarms
Your favorite sound will get you out of bed!
Choose from one of your mp3-files or from thousands of radiostations, sorted by country.
One quick swipe turns the alarm clock into a radio-player if you want to keep listening.

Pro No ads, no frills!
PocketBell is, and will always be, completely ad-free.

Pro Materialdesign - Easy and fast setup
This alarm clock was designed for a maximum of simplicity and a minimum of needless features.
An intuitive and easy alarm setup with simple gestures allows setting up alarms in seconds.
The gesture controlled setup of recurrent alarms has never been easier.

Pro Smart motion control
Feels like magic, when a simple move of your phone dismisses the alarm.
Flip it, shake it or lift it. - and this alarmclock will respond in a way you want it to.
Dismiss, snooze or go-silent.
Pro Similar to traditional wind-up alarms
Pro Minimal
Single-function app, APK is ~200KB which is a really small file size.
Pro Free and open-source
Cons
Con 12-hour input
A "pro" if you're familiar with traditional clock input, but may be problematic if you're used to digital clocks.
Con Single alarm time
Good if you wake up at the same time, or used to set a different wake-up time every day.
May not work for people who work in shifts.
